Plow



July '24, 1928.

` 1,678,343 c. D. KRETZER lPLow Filed June 6.-1927 2 sheets-sheet 2 '/4 TTD/RNE? y Patented July 24, 1928.`

errer) lsrArlazs cuantas n. Knr-:Tann or PORTLAND, OREGON.

PLOW.

Application inea June c,

` This invention relates generally to agrifacilitate the maneuvering ofthe tractor and the plow and to improve the quality of the plowing done. i y

The second object is to so attach the plow to the tractor that the depth of the plowing will be exceedingly uniform to the entire exclusion of all skips and if, forany reason, the plow should run out'of the ground, due to the encounter of a stone or other obstruction, it will immediately run back into the ground to the desired depth.

The third object is to so attach the plow to the tractor as to reduce its tendency to buclL-that is, for its frontk wheels to rise from the ground whenever vthe loadbeeomes unusually heavy.

The fourth object is to make the plow easily controllable from the drivers seat and adjustable both for angularity and depth of i plowing with very little effort on the part ofthe driver.

The fifth object is to provide a special kspring-urged mechanism for urging the plow to the full deptlrof plowing at all times. The sixth object kis to so construct the plow that it can be easily converted from a right to a left hand plow for side hill plowing purposes.

The seventh object is to so construct the attachments as Vto Vrequire they `minimum amount of alteration in the tractor itself, with special reference to that type of tractor known in the market as a Fordson.

These, and oth'er'objects7 will become more apparent from the specification following as illust-rated in the accompanying` drawings, in which: Y

Figure 1 is a side elevation of the device showing its relation to a tractor. Figure 2 is a vertical section taken along the line 2-2 in Figure 1. Figure 3 is a plan of Figure 1. Figure 4 is a horizontal section taken along the line 4-4 in Figure 2. Figure 5 is a perspective view of the plow point adjusting mechanism. Figure 6 is a perspective view of the plow beam support and the spring mounting therefor. Figure 7 is a plan of a modified form of the device show- 1927. st eriai No. 196,737.

ing right` and left` hand plows similarly mounted behind `a tractor. Figure 8 is a phantom view of the tractor showing the left handv plow in` operation on a hill side. Figure 9 is similar to Figure 8 but showing the right hand plow in operation. `F igure 10-is a `perspective view of the plow operating mechanism and various associated adjustments.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawings,` there is shown, in phantom, a tractor provided with the usual front wheels 11 and front axle 12 and the rear wheels 13 and rear aXlel 14 which project from the differential casing 15. The hitch 16 which forms a part of the tractor is indicated, but is not employed with this device.

It will be noted that the point 17 of the plow 18 is Very close to the wheels 13 and that the beam 19 is bent to permit the hinged point of the plow to be in the correct position. The usual colter 20 is attached to the beam 19. i

The forward end of the plow beam 19 has bolted thereto the kside members21 by means of the bolts 22 and 23. 21 are provided with slots 24; which permit a considerable adjustment for the plow point; the real hinging pointof the plow being on the bolt 241-A which passes loosely through the arm 25 which s is mounted on the transverse bar 26.` The member 2G is preferably square and the arm 25 is clamped thereto by means of the bolts 27. The outer end 28 of thebar126 is hinged on the bolt 29, which passes through the uprights 30 and 31 whose curved portions 32 pass around the axle 14.-. The members 30 and 31 are provided with holes 33 for the bolt 29 which provides a coarse adjustment for the plow point.

To the lower end of the members 30 and 31 isl secured a forwardly extending strap 34- whose forward end is secured tothe clamp 35 on the front axle 12 by means of the bolt 3G.

At the upper end of the members 30 and 31 is secured one end of a bar 37 whose for- Y ward end 38 is secured to the tractor itself. Behind the Vbar 37 is a plate 39 which is boltedto the side of the dilferentialcasing 15. To the dilferential casing 15 is also secured a pair of rearwardly extending The members ln the plate 39 is formed a vertical slot.

49 which acts as a guide for the end of the bar 26. The bar 26 is i supported on the floating lever 50 Whose rearward end is support-ed on the link 51 which is attached to'v the plate 39 by means of the bolt 52. `The forward end of the lever 50 vis provided with a nut 53 to which it is attached by means ofthev triinnion bolt 54. Passing through theuniit 53 is an upright rod 55 whose threaded eiidextends into the nut 53 and whose upper end journals in the bracket 56 which is mounted on the side of the differential casing 15.

yOn the crank 43 is mounted Aa roller 57 upon which rests the plow beam 19. On each side of the roller 57 is secured a collar from which projects the .upright standard 59 across which is placed the bar 60 which rests on top of the plow beam 19.

Springs 61 on the members 59'are' heldy down by the washers 62 and the nuts 63.

Attached to the 'lower forward corner of the plate 39 is a tie rod `64 whose forward end is also secured by the bolt 36.

rThe operation of thev device is as follows: Then starting to plow the bolt 29 is first passed through the desired hole 33 and the ci'ank 65 on the rod 55is rotated to raise its end of the bar 26the desired height. lt is assumed that `the bolt 23 has been placed in the correct slot 24y so as to require the least adjustment possible.

rlhe driver then moves the hand lever y47 .forward which allows the plow to descend and to permit it to run into'the ground as soon as the tractor moves forward. Liany tendency to jump out of the rground isovercome bythe tension ofthe springs 61, which maintain a spring pressure against the top of the beain19. Y y i The parts of the right and left lia-nd plowswhave not been separately described since they are identical in nature, with the exception that one is right hand andthe other left hand. v

ln raising the plow out of the ground the operator merely draws the lever 47 toward WhOSe:

him, a movement whichr permits him to use his greatest strength, although the operation itself is not at lall arduous.

It canl be seen from the above construction that this hitch enables the plow to opcrate yclosely to the tractor without the use of a sulkyv device which will ordinarily cause it to tra-il at some distance behind the tractor, whichl is usually the case, requiring much room for turns, causing a considerable loss of time and undue'packing of the soil, duer to the distance the tractor must f' notr intend to cover such devices broadly,

but l' do intend to cover all such forms and inodications thereof vas fall fairly within the appended claims.

I claim 1. A plow having a hitchfor attaching same to the "front axle of a tractor, an

kengaging the under sider of the plow beam, -andspring means Von said crank adapted to urgefsaid plow downwardly. n

2. A'plow hitch for tractor plows consisting of a bar, a ,hitchv clamp on saidbar,`v

a bracket hung from the rear aXle of the tractor supporting the outer end of said bar, a plate attached to the tractor frame supporting the inner end of said bar, tie

rods between saidbar and the front axle of the tractor, means for adjusting the height of the bai', and lever means for raising a .plowy whose lbeam is attached to said hitch clamp. l

3. A depressor for plow beams consisting i' of a crank, a roller mounted on said crank adapted to engage the'uiider side of.L a plow beam, spring means for urging a plow beam toward said roller, and lever means for 11o `rocking said crank.

cininrns D. KRETZR. 

